Decentralized wellhead centralizer

The utility model discloses a decentralized wellhead centralizer, its characterized in that: it is including the power pole, at fixed the being provided with clamping device who is used for pressing from both sides tight packing box of the lower extreme of power pole, is provided with the rotation ejector pin in the upper end of power pole, rotate the ejector pin and do all can that the pole is perpendicular to be set up, that rotates the ejector pin wears the threaded hole of dress on the power pole, and its one end is provided with the handle, and the other end is provided with the thrust piece for promote the polished rod. The utility model discloses the change packing that can relax has conveniently reduced workman's intensity of labour, reduces and stops the economic loss that the well caused for a long time, has simple structure, simple to operate, characteristics such as safe and reliable.